參數(shù)資料
型號(hào): TDA7420
廠商: 意法半導(dǎo)體
英文描述: MULTIFUNCTIONAUDIO PROCESSOR
中文描述: MULTIFUNCTIONAUDIO處理器
文件頁(yè)數(shù): 1/29頁(yè)
文件大小: 230K
代理商: TDA7420
TDA7420
MULTIFUNCTIONAUDIO PROCESSOR
CASSETTE PREAMPLIFIER:
FORWARD/REVERSE
COMPATIBLE
INTERNAL SWITCHES FOR EQUALIZATION
INTERNAL ADJUSTMENT FOR TRAKING
INTERNAL ADJUSTMENT FOR OUTPUT
INPUTS
GROUND
AMS:
INPUT GAINCONTROL
ADJUSTABLE GAIN VERSUS FREQUENCY
AUDIOPROCESSOR:
INPUTS: 1 FULLY DIFFERENTIAL, 1 DIFFER-
ENTIAL, 1 STEREOAND 1 MONO
INPUT GAINFROM 0 TO 15dB(1dB STEP)
VOLUME CONTROL FROM +16 TO -63dB
(1dB STEP)
BASS AND TREBLE CONTROL FROM -18
TO 18dB (1dB STEP)
DIRECT MUTE, SOFT MUTE AND RADIO
MUTE
FOURINDEPENDENT OUTPUT STAGES:
- ATTENUATION CONTROL FROM
0 TO -79dB (1dB STEP)
- BEEPCONTROL (ON/OFF, FRONT/REAR)
STEREO DECODER:
ROLL-OFFADJUSTMENT
SELECTABLEDEEMPHASIS
19KHz CANCELLATION
HIGH CUT CONTROL
STEREOBLEND
NOISE BLANKER
AUTOMATIC THRESHOLD CONTROL AND
PROGRAMMABLE TRIGGERTHRESHOLD
INTEGRATED HIGH PASS FILTER
PACKAGE:TQFP64 (14x14)
DESCRIPTION
The TDA7420 I
2
C bus controlled multifunction
audio processor contains all signal processing
blocks of a high performance car radio, including
audioprocessor, stereodecoder, noise blanker,
different mute functions,cassette preamplifier and
AMS function.
The use of BICMOS technology allows the imple-
mentation of several filter functions with switched
capacitor techniques like fully integrated, adjust-
ment free PLL Loop filter, pilot detector with inte-
grator.
This minimizes the number of external compo-
nents.
Due to a highly linear signal processing, using
CMOS-switching techniques instead of standard
bipolar multipliers, very low distortion and very
low noise are obtained also in the stereodecoder
part.
Very low DC stepping is obtained by use of the
BICMOS technology.
May 1998
ORDERING NUMBER:
TDA7420
TQFP 64(14x14)
1/29
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